Improvement in tire-upsetting machines



R. GIB'BS.

Tire-Uputting-Machines. N0. 1425455. Patented September2,187`.f1

UNITED STATES PATENT OFFICE.

ROBERT GIBBS, OF SPRING HILL, MISSOURI, ASSIGNOR TO HIMSELF AND SARAH E. GIBBS, OF SAME PLAGE. I

IMPROVEMENT IN TIRE-UPSETTING MACHINES.

Specification forming part of Letters Patent No. 142,455, dated September 2, 1873; application filed.

April 21, 1873.

To all whom it may concern:

Be it known that I, ROBERT GIBBS, of 'Spring Hill, in the county of Livingston and State of Missouri, have invented a new and useful Improvement in Tire-Shrinkers, and I do hereby declare the following to be a full, clear, and exact description of the same, referenceibein g had to the accompanying drawing forming part of this specification.

The invention consists in improved means for shrinking tires or bands, as hereinafter described and subsequently pointed out in the claim.

Figurel is a side elevation of my invention. Fig. 2 is a transverse section of same inline w, Fig. 1; and Figs.3, 4, and 5 are sections of modiiications.

In the drawing, A represents the base, from which is pendent the bar a, that enters the hole of an anvil, B. This basev has two parallel flanges on each end, which have each .keyslots ttl-one or more. O C are clamp-keys, which pass through the slots al al, and l) a tire in which an arch, d, is formed, the dimensions of the arch being correspondent to the shortening which is required. After the keys U (l are passed through slots a1 and made to v hold the arched tire I) d firmly to thel base A this arch is hammered until it is contracted and made to coincide with the surface of base.' This gives the shortening required. Again, the `baseA has also a horizontal slot, 0.2,which is made to register with the long horizontal slot c2 of a slide-bar gage, E, while both are thus adapted to receive a gage-key, F. The bar E has a loop, c2, of the oblong slotted form, in which works the gage-key F, that is made tapering to draw said bar when driven or forced by a lever in either direction.

The gage-bar and key, one or both, may be provided with a scale made longitudinally thereon. A tire, G, is fastened to the base A gage-key as the operation progresses. Again,

the same effect may be produced by an endslotted lever, H, and hooks I I, applied, re# spectively, over and under the gage-key and clamp-key fj".

The lever H, provided with hooks I I, is to be used in place of the slide-bar gage E. I

place the hooks I I one on the point of the gage-key F and the other over or Vunder tireclamp. Then fasten the tire with key C rigidly to the base at one end and slightly at the 0p- .1

posite end, in order to let the tire and hooks pass under when shrinking, while it is prevented, at'the same time, from rising.

Finally, I operate the lever, and find it able to shorten the tire. If one operation with lever is not sufficient, return the lever H to an upright position, slide the gage-key F farther, and repeat the contraction.

Thus I show-three distinct modes of shorti ening tire and one of bands on the same base, namely, by the al ch and hammer, by the slidebar gage and gage-key F, and by the handlever H.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-" The base A, having flanges with slots a a2, the key C F, key-clamps fj", and the slide-bar gage E e e2, combined and constructed substantially as and for the purpose set forth.

t ROBERT GIBBS. Witnesses: l

J As. F. Moss, J. B. KIRK. 

